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飞行时间法测量离子飞散速度的主要探测器是电荷收集器——Faraday筒,它是等离子体测量简单实用的工具。 高功率激光束聚焦到平面固体靶上,仅在靶表面形成一薄层高温等离子体。当高温高密度等离子体在真空中膨胀时,它的大部份能量都变成离子的定向动能,距靶较远处电荷收集器测量到的离子流信号是高功率激光束产生的高温等离于体发出的。用电荷收集器测出离了的飞散时间,探测器位置一定(距靶65cm),即可得到飞散速度和等离子体的温度。
Time-of-flight method The main detector for measuring the rate of ion scattering is the charge collector Faraday Barrel, a simple and practical tool for plasma measurements. The high-power laser beam is focused on a planar solid target, forming a thin layer of high-temperature plasma only on the target surface. When a high-temperature, high-density plasma expands in a vacuum, most of its energy becomes the ion’s kinetic energy. The ion current signal measured by the charge collector further away from the target is the high-temperature plasma generated by the high-power laser beam Made in the body. With the charge collector measured flying away from the scattering time, the detector position (from the target 65cm), you can get flying speed and plasma temperature.